Changes between Version 3 and Version 4 of ClientApp

Author:

davea (IP: 128.32.18.181)

Timestamp:

11/14/07 15:01:33 (2 years ago)

Comment:

--

ClientApp

@@ -9 +9 @@
-''Explain work-related use of shmem''
-
-catbox' directories, allowing them to create and use temporary files without name conflicts. Input and output files are kept outside the catbox. The mappings from virtual to physical filenames use 'symbolic link' files in the catbox
+slot' directories, allowing them to create and use temporary files without name conflicts. Input and output files are kept outside the slot directory. The mappings from virtual to physical filenames use 'symbolic link' files in the slot
-
-catbox
+slot
-
-'''Files created by the core client, read by the app:''' (Once, at start of app)
-'''Files created by the API implementation, read by the core client:'''
-
-; the real-time clock is not available to applications
+
-
- * To tell the app when to checkpoint;
- * To regenerate the fraction done file
- * To refresh graphics
-
-'''Exit status''' The core client does a wait() to get the status. boinc_finish() ends with an exit(status);
-'''Accounting of CPU time''': (note: in Unix, a parent can't get the CPU time of a child until the child exits.  So we're forced to measure it in the child.) The core passes the WU CPU time in init_data.xml. boinc_checkpoint_completed() and boinc_finish() compute the new WU CPU time, and write it to checkpoint_cpu.xml. The core deletes this after reading. If on exit there is no checkpoint_cpu.xml, it means the app called exit(0) rather than boinc_finish(). In this case the core measures the child CPU itself.
-
-The core client maintains
-
-'''Timing of checkpoints'''
-The app library maintains time_until_checkpoint, decremented from the timer handler. boinc_time_to_checkpoint() returns nonzero if  time_until_checkpoint is zero or less. boinc_checkpoint_completed() resets it.
-
-'''Maintaining fraction done and current CPU'''
-
-These two quantities are transferred from the app library to the core client in the file fraction_done.xml. The parameter time_until_fraction_done_update, passed in the initialization file, determines how often this file is written. It is written from the timer handler.
-
-For multi-program applications, only the active application must write the file. The functions boinc_child_start() and boinc_child_done() tell the app library to stop and start writing the file.
-
-TO DO: ~~this creates disk traffic. Either figure out a way of increasing the period for users who don't want disk access, or don't use disk files~~.[[BR]]'''Doesn't work that way anymore. This page is very outdated.'''